# udevadm info -a -n /dev/noz2
Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.
looking at device
'/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/tty/noz2':
KERNEL=="noz2"
SUBSYSTEM=="tty"
DRIVER==""
looking at parent device
'/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0':
KERNELS=="0000:03:00.0"
SUBSYSTEMS=="pci"
DRIVERS=="nozomi"
ATTRS{irq}=="16"
ATTRS{subsystem_vendor}=="0x0000"
ATTRS{broken_parity_status}=="0"
ATTRS{class}=="0x028000"
ATTRS{consistent_dma_mask_bits}=="32"
ATTRS{dma_mask_bits}=="32"
ATTRS{local_cpus}=="ff"
ATTRS{card_type}=="2048"
ATTRS{device}=="0x000c"
ATTRS{enable}=="1"
ATTRS{open_ttys}=="0"
ATTRS{msi_bus}==""
ATTRS{local_cpulist}=="0-7"
ATTRS{vendor}=="0x1931"
ATTRS{subsystem_device}=="0x0000"
looking at parent device '/devices/pci0000:00/0000:00:1e.0/0000:02:00.0':
KERNELS=="0000:02:00.0"
SUBSYSTEMS=="pci"
DRIVERS=="yenta_cardbus"
ATTRS{irq}=="16"
ATTRS{subsystem_vendor}=="0x1014"
ATTRS{broken_parity_status}=="0"
ATTRS{class}=="0x060700"
ATTRS{consistent_dma_mask_bits}=="32"
ATTRS{dma_mask_bits}=="32"
ATTRS{local_cpus}=="ff"
ATTRS{device}=="0x0476"
ATTRS{enable}=="2"
ATTRS{msi_bus}=="1"
ATTRS{local_cpulist}=="0-7"
ATTRS{vendor}=="0x1180"
ATTRS{subsystem_device}=="0x0555"
looking at parent device '/devices/pci0000:00/0000:00:1e.0':
KERNELS=="0000:00:1e.0"
SUBSYSTEMS=="pci"
DRIVERS==""
ATTRS{irq}=="0"
ATTRS{subsystem_vendor}=="0x0000"
ATTRS{broken_parity_status}=="0"
ATTRS{class}=="0x060400"
ATTRS{consistent_dma_mask_bits}=="32"
ATTRS{dma_mask_bits}=="32"
ATTRS{local_cpus}=="ff"
ATTRS{device}=="0x2448"
ATTRS{enable}=="1"
ATTRS{msi_bus}=="1"
ATTRS{local_cpulist}=="0-7"
ATTRS{vendor}=="0x8086"
ATTRS{subsystem_device}=="0x0000"
looking at parent device '/devices/pci0000:00':
KERNELS=="pci0000:00"
SUBSYSTEMS==""
DRIVERS==""
And it's not an USB device, it's a PCCard. It hangs on the PCI bus.
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https://bugs.launchpad.net/bugs/1136228
Title:
PCCard UMTS modem Option GT 3G+ is not recogniced by modem-manager
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